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Transmission

Triumph Bonneville · Clutch & Transmission incl. Gearchange Mechanism · 34 parts

Exploded parts diagram — Transmission, Triumph Bonneville

Open this diagram in the interactive viewer → Click any callout on the drawing to jump to the part.

Motorcycles this catalogue covers

Bonneville T100

Bonneville T120

Bonneville T120 Black

Our parts team checks fitment against your motorcycle before any order ships.

Every part on this diagram

1

Gearbox Assy, Input, 6 Speed

Qty 1

If the last 6 of your VIN are AA3616 or lower and your engine number is AA9711 or lower

Triumph has stock

$1091.45

Order-in Ask the parts desk

1

Gearbox Assy, Input, 6 Speed

Qty 1

If the last 6 of your VIN are AA3617 or higher and your engine number is AA9712 or higher

Triumph has stock

$1364.31

Order-in Ask the parts desk

2

Gearbox Assy, Output, 6 Speed

Qty 1

If the last 6 of your VIN are AA3616 or lower and your engine number is AA9711 or lower

Triumph has stock

$1337.90

Order-in Ask the parts desk

2

Gearbox Assy, Output, 6 Speed

Qty 1

If the last 6 of your VIN are AA3617 or higher and your engine number is AA9712 or higher

No date from Triumph yet

$1311.65

On backorder Ask the parts desk

3

Output Shaft, Gearbox, 6 Speed

Qty 1

Triumph’s Aug 28, 2026 date has passed, we’ll confirm

$271.12

On backorder Ask the parts desk

4

Bearing, Ball, 25 x 62 x 17

Qty 1

Triumph has stock

$184.79

Order-in Ask the parts desk

5

Output Gear, 2nd, 45T

Qty 1

Triumph has stock

$142.58

Order-in Ask the parts desk

6

Output Gear, 5th, 35T

Qty 1

Triumph has stock

$95.04

Order-in Ask the parts desk

7

Output Gear, 4th, 37T

Qty 1

Triumph has stock

$103.83

Order-in Ask the parts desk

8

Output Gear, 3rd, 37T

Qty 1

Triumph has stock

$139.06

Order-in Ask the parts desk

9

Output Gear, 6th, 34T

Qty 1

Triumph has stock

$95.04

Order-in Ask the parts desk

10

Output Gear, 1st, 49T

Qty 1

Triumph has stock

$142.58

Order-in Ask the parts desk

11

Spacer, Sprocket, Width 18.01

Qty 1

Triumph has stock

$12.66

Order-in Ask the parts desk

12

Bearing, Needle

Qty 1

Triumph has stock

$17.45

Order-in Ask the parts desk

13

Thrust Washer, 35.5 x 43 x 1.5

Qty 2

Triumph has stock

$3.81

Order-in Ask the parts desk

14

Circlip, ID 32.2

Qty 2

Triumph has stock

$7.83

Order-in Ask the parts desk

15

Plain Bush, Output, 3rd

Qty 2

Triumph has stock

$49.29

Order-in Ask the parts desk

16

Thrust Washer, 30.5 x 40 x 1.5

Qty 1

Triumph has stock

$3.81

Order-in Ask the parts desk

17

Plain Bush, Output, 2nd

Qty 1

Triumph has stock

$49.29

Order-in Ask the parts desk

18

Qty 1

Triumph has stock

$8.01

Order-in Ask the parts desk

19

Bearing, Ball, 25 x 62 x 17

Qty 1

Triumph has stock

$184.79

Order-in Ask the parts desk

20

Qty 1

Triumph has stock

$3.32

Order-in Ask the parts desk

21

Bearing, Cyl Roll 22, 1 x 40 x 12

Qty 1

Triumph has stock

$54.55

Order-in Ask the parts desk

22

Restrictor Washer, Gearbox

Qty 1

Triumph has stock

$7.52

Order-in Ask the parts desk

23

Sleeve Assy, Needle bearing

Qty 1

Triumph has stock

$58.98

Order-in Ask the parts desk

24

Circlip, EXT, 23.5 x 1.2

Qty 1

Triumph has stock

$4.04

Order-in Ask the parts desk

25

Bearing, Needle, K25 x 32 x 16 V5

Qty 1

Low stock at Triumph

$16.45

Order-in Ask the parts desk

26

Thrust Washer, 25 x 35 x 1.0

Qty 1

Triumph has stock

$4.56

Order-in Ask the parts desk

27

Seal, Oil 35 x 62 x 5

Qty 1

Triumph has stock

$22.78

Order-in Ask the parts desk

28

Sprocket, Front, 17T, 525

Qty 1

Triumph has stock

$48.98

Order-in Ask the parts desk

29

Tab Washer, Sprocket

Qty 1

Triumph has stock

$25.81

Order-in Ask the parts desk

30

Nut, Gearbox Sprocket

Qty 1

Triumph has stock

$5.15

Order-in Ask the parts desk

31

Screw, Cap/Hd, M6 x 16, Enc, Raw

Qty 2

Triumph has stock

$0.53

Order-in Ask the parts desk

32

Bearing Retainer Plate

Qty 1

Triumph has stock

$17.71

Order-in Ask the parts desk

Diagram and part data from Triumph’s own parts catalogue. Prices and availability are a dated snapshot, not a reservation. Fitment is Triumph’s data — send us the last six of your VIN if you want it checked before you order.

Southern California Motorcycles, 515 W Lambert Rd, Brea, CA 92821 · 714-256-6700

Triumph supply checked Aug 5, 2026 · Brea shelf Aug 18, 2026.